$ git clone -n https://src.fedoraproject.org/rpms/mrxvt.git /var/lib/mock/f41-build-1022689-18093/root/chroot_tmpdir/scmroot/mrxvt
Cloning into '/var/lib/mock/f41-build-1022689-18093/root/chroot_tmpdir/scmroot/mrxvt'...
$ git fetch origin fcbd911ad2099c3c6d54ae0131fd4d9af1239c79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mrxvt
 * [new ref]         fcbd911ad2099c3c6d54ae0131fd4d9af1239c79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcbd911 Orphaned for 6+ weeks